Check that you don't have a filter enabled in the sidebar - anything in blue is filtered (if it's in blue even if it says "all" try changing to another option and back to "all").
Also check that you have the correct player selected in the player list and that you're looking at the correct cash/tournament section.
If you still don't see any data please open a
Support Ticket and attach a
screenshot of PT4 along with the PokerTracker4.log file so that we can see what is going on.
Tutorial: Reporting a problem